Subscribe to our free daily newsletters
. 24/7 Space News .




Subscribe to our free daily newsletters



WATER WORLD
What is a storm surge and why is it so dangerous?
by Staff Writers
Miami (AFP) Sept 9, 2017


The biggest threat to human life during a hurricane is often the storm surge, which occurs when sea level rises dramatically during a storm, sending a wall of water gushing over land.

Forecasters warn that the storm surge from Hurricane Irma could reach 15 feet (4.5 meters) along parts of the Florida coast in the coming hours.

Here are some facts about storm surge and what makes it so dangerous.

- How does it start? -

Storm surge does not come from rainfall or flooding, but occurs when powerful winds from a hurricane push ocean water higher than usual over the shore.

Storm surge is an "abnormal rise of water generated by a storm, over and above the predicted astronomical tides," according to the National Oceanic and Atmospheric Administration (NOAA).

- Why is it so deadly? -

Storm surge begins before the hurricane makes landfall, making it harder for people to evacuate in time.

Most of the 1,800 deaths from Hurricane Katrina, which struck Louisiana in 2005, are attributed to storm surge, NOAA said.

Storm surge can extend for dozens of miles inland, filling buildings with water quickly, making roads impassable and causing people to drown in their cars or homes.

Also, the accumulated weight of water -- some 1,700 pounds per cubic yard -- can demolish any structure not specifically designed to withstand such force.

- Factors that shape surge -

Storm surge is shaped by a number of different factors, including storm intensity, forward speed, the size of a storm and the angle of approach to the coast.

The underlying features of the land at the coast, including bays and estuaries, are also at play.

"A shallow slope will potentially produce a greater storm surge than a steep shelf," said NOAA.

The Louisiana coastline has a wide and shallow continental shelf, which can produce a 20-foot storm surge in a Category 4 hurricane.

Miami Beach, on the other hand, has a steep dropoff to its continental shelf, which could limit the storm surge to about eight or nine feet under a Category 4 hurricane.

Even as Irma takes aim at Florida's west coast, both coasts of the peninsula can expect storm surge.

On the west coast, storm surge could reach as far as seven miles (11 kilometers) inland, meteorologists say.

- Unknowns -

Rising seas and warming oceans due to climate change are also expected to amplify the effects of storm surge in the coming decades.

Numerous studies have predicted that storm surges will become more frequent and deadly as the planet warms.

WATER WORLD
Pacific corals in 'worrying' state: researchers
Paris (AFP) Sept 6, 2017
A survey of Pacific corals has found many severely bleached, some near-dead, according to marine researchers who warned Wednesday that global warming threatened the precious ecosystem's very survival. An in-depth probe along a 50,000-kilometre (31,000-mile) stretch of the Pacific found that up to 90 percent of some coral colonies around the Samoan islands had been bleached. Around the Tu ... read more

Related Links
Water News - Science, Technology and Politics


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

WATER WORLD
NASA Offers Space Station as Catalyst for Discovery in Washington

Voyager Spacecraft: 40 Years of Solar System Discoveries

Trump names former Navy aviator to head NASA

The wackiest innovations at Berlin's IFA 2017

WATER WORLD
ISRO Develops Ship-Based Antenna System to Track Satellite Launches

NASA Concludes Summer of Testing with Fifth Flight Controller Hot Fire

Aerospace test at Sandia goes green with alternative to explosives

Falcon 9 launches from Vandenberg

WATER WORLD
For Moratorium on Sending Commands to Mars, Blame the Sun

Tributes to wetter times on Mars

Opportunity will spend three weeks at current location due to Solar Conjunction

Curiosity Mars Rover Begins Study of Ridge Destination

WATER WORLD
China, Russia to Have Smooth Space Cooperation, Says Expert

Kuaizhou-11 to send six satellites into space

Russia, China May Sign 5-Year Agreement on Joint Space Exploration

ESA and Chinese astronauts train together

WATER WORLD
ASTROSCALE Raises a Total of $25 Million in Series C Led by Private Companies

LISA Pathfinder: bake, rattle and roll

Bids for government funding prove strong interest in LaunchUK

Blue Sky Network Reaffirms Commitment to Brazilian Market

WATER WORLD
New microscopy method for quick and reliable 3-D imaging of curvilinear nanostructures

Chinese video site offers virtual escape from 'boring' reality

Non-thermal atmospheric pressure plasma treatment for leather products

Bit data goes anti-skyrmions

WATER WORLD
Does the Organic Material of Comets Predate our Solar System?

Earth as Hybrid Planet: The Anthropocene Era in Astrobiological Context

A New Search for Extrasolar Planets from the Arecibo Observatory

Gulf of Mexico tube worm is one of the longest-living animals in the world

WATER WORLD
New Horizons Video Soars over Pluto's Majestic Mountains and Icy Plains

Juno spots Jupiter's Great Red Spot

New evidence in support of the Planet Nine hypothesis

Scientists probe Neptune's depths to reveal secrets of icy planets




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement